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2 years ago

Simplify (10j+5k)+6j. What 2 properties did you use to to simplify the expression?

Mathematics

1 answer:

Artemon [7]2 years ago

8 0

Answer:

16j+5k

Associative property

Communitive Property (I think)

Step-by-step explanation:

(10j+5k)+6j =

(10j+6j)+5k =

16j+5k

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Find the first partial derivatives of the function f(x,y,z)=4xsin(y−z)

Amanda [17]

Answer:

$f_x(x,y,z)=4\sin (y-z)$

$f_x(x,y,z)=4x\cos (y-z)$

$f_z(x,y,z)=-4x\cos (y-z)$

Step-by-step explanation:

The given function is

$f(x,y,z)=4x\sin (y-z)$

We need to find first partial derivatives of the function.

Differentiate partially w.r.t. x and y, z are constants.

$f_x(x,y,z)=4(1)\sin (y-z)$

$f_x(x,y,z)=4\sin (y-z)$

Differentiate partially w.r.t. y and x, z are constants.

$f_y(x,y,z)=4x\cos (y-z)\dfrac{\partial}{\partial y}(y-z)$

$f_y(x,y,z)=4x\cos (y-z)$

Differentiate partially w.r.t. z and x, y are constants.

$f_z(x,y,z)=4x\cos (y-z)\dfrac{\partial}{\partial z}(y-z)$

$f_z(x,y,z)=4x\cos (y-z)(-1)$

$f_z(x,y,z)=-4x\cos (y-z)$

Therefore, the first partial derivatives of the function are $f_x(x,y,z)=4\sin (y-z), f_x(x,y,z)=4x\cos (y-z)\text{ and }f_z(x,y,z)=-4x\cos (y-z)$ .

4 0

3 years ago

Answers: 3x + 26 5x + 15 x + 30 10x - 7 please answer fast!

pentagon [3]

Answer: I think it's A. 3x + 26 but im not completely sure

Step-by-step explanation:

5 0

3 years ago

How do I do this because it's really confusing haha

netineya [11]

A = 1.5
B = -1/3
C = -4/3

A is a positive so there is only one possibility
B is in between 0 and -1, so it has to be -1/3
C is below -1 and so its the improper fraction

5 0

3 years ago

Explain why the oppisite of a positive number will always be a negitive number

Aloiza [94]

Answer:

because a positive is over zero and a negative is below zero so from that you can tell that the opposite of any positive will be a negative.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Which of the following would be a line of reflection that would map ABCD onto itself?

Sonbull [250]

Answer:

I'm not sure but I think the answer is x + y = 1

Step-by-step explanation:

I hope this helps!

6 0

2 years ago